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I just figured it out. Yeah i just updated my other computer to the JRE 7 and now it works. Thanks for the help though.

I'm on the 1.7 JDk and I'm not sure what they are on whatever the newest version of JRE is, thats what they have.

My friends are trying to open, the .jar file, I created with netbean's build button. I had them update their java to the newest version. I am using the newest version of the JDK.

I have two .class...

Ok so i created a simple window using swing. The problem I'm having is my .jar file runs fine on my computer, the program opens and does what I want, but when my friends try to open it on their...